Mass-Labelled PCB Solution , 1.2ml x 20ng/ml, nonane

1,5-Dichloronaphthalene, 1.2ml x 50ug/ml, nonane

Theophylline-d6 (dimethyl-d6), 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 11790-39-8

Di-n-butyl phthalate, >99%, 25g